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¿µ¹® ³»¿ë¿ä¾à PDF is a key document format for accessible digital publications, alongside EPUB. This PDF authoring guideline covers accessibility semantic tags, visual element handling (images, tables), and other aspects. Some concepts overlap with the 2022 KS standard Accessibility of E-books for Persons with Reading Disabilities – Part 1: Authoring Guidelines for EPUB.
However, PDF differs significantly from EPUB, mainly due to its fixed layout. While it preserves visual arrangement, discrepancies with logical reading order may occur, requiring explicit reading order specification. When multiple graphic boxes overlap, the Actual Text attribute can be used to group elements semantically while maintaining the document¡¯s visual structure.
Since EPUB¡¯s reflowable format guidelines are unsuitable for fixed-layout PDFs, the standard "PDF Accessibility Guidelines – Part 1: Authoring Guidelines" is established based on PDF¡¯s unique accessibility characteristics.
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